Reply To: Back To The No Spark Issue

[jeff-register]

Joe,

I had the same problem with a secondary winding. Reading very hi resistance and I found a carbon gap where it had been run with plug wire off & arced to the plate & had  a little pin sized hole in the outer covering where it arced to ground.

Do you have all rhe spacers required on the points to points arm? Little nylon insert & washers. No telling who has been in there before you! Check the solderless wire connections for hi resistance, I’ve found that before wire to connector. Don’t assume any connection is good. I had a magneto that was missing real bad. I had cleaned the contact surfaces very well & lubed lightly & one coil was reversing current to the other coil turning the points gold they got so hot. Hi voltage does weird things. Added a ground, bonding wire from mag plate  to block & solved it. With cleaning & relubing it had very high resistance between the block & mag plate. Check every connection even if it is a mechicnal. The figure 8 on the ohms scale equals infinate or no connection. Hope this helps! I wonder if your rotor is running true? put it on /7 rotate  the crankshaft & clearances between both laminations & record, rotate 180 degrees & recheck. That’s one I’ve learned from a service manual, clearances are very tight for a good spark. Check capacitors on an magneto analaiser, VOM meters check  face not working values. That would kill good sspark.If they are old the dielectric value is bad, insulation value, sorry! Caps are a sandwhich of conductor/insulator/conductoe & akk you need is a pin hole in the insulator for failure. enough out of me! Don’t give  up you WILL find the problem!!